Large Caliber Miscellany

So I was searching for information on loading large caliber projectiles.  Though I haven't even gotten my .50 yet, I'm already looking at larger bores....  Having found a source for 20mm Vulcan brass, I was curious about what it takes to load the monster.  That led me to a site on THR that has a bunch of links that are useful, as well as information from a guy who shoots PTRD and PTRS rifles.

The useful links:

• Reloading the .50 BMG - Good info on how it's done!
• CH4D - Reloading equipment for eccentric calibers such as 20mm Vulcan, Solothurn, and Lahti.
• The Gatling Gun - History from an Army website.
• Bartlett Reloaders - For once-fired brass.
• Pat's Reloading - .50 BMG projectiles.
• Hi-Tech Ammunition - .50 BMG projectiles.